Admission fee is 100 Baht per person. An entrance ticket from the Grand Palace allows free entry to Vimanmek Mansion for 7 days. It is not allowed to carry personal belongings like bags, phones and cameras into the Palace. At the entrance you will be asked to store everything in a locker you can rent for a 20 Baht fee. Taking photographs inside the Palace is not allowed, outside it is. Guided tours are provided in English language, before entering the Mansion you will be asked to join a group tour, wandering around alone in the Mansion is not allowed.